Hide/Unhide functions implementation - need help

[Roland Schäfer]

Hello,
I'm new to KDevelop, but i like it that much so i want to
contribute something and implement the hide/unhide feature of
functions.
I started implementing it, but i'm not sure if i'm capable of
doing that alone. If there is someone experienced who could help
me.
My idea:
I added bool TextLine::viewable=true, the KWriteView:paintEvent()
is changed:
Line980: if (kWriteDoc->contents.at(line)->isViewable()) {
<original Paint>
}

Should work. Any suggestions or comments?
(Need help with the menu and toggeling the viewable-flag)

Thanks
Roland